Coordinate Converter – GPS & GIS Coordinate Transformer
Instantly convert coordinates across 20+ geodetic systems. Batch processing with full client-side privacy.
Coordinate Picker Tools
Get coordinates from popular mapping services like Google Maps, AMap, Baidu Maps, and Tencent Maps to use in our converter.
AMap Coordinate Picker
lbs.amap.com/tools/pickerBaidu Coordinate Picker
api.map.baidu.com/lbsapi/getpointTencent Coordinate Picker
lbs.qq.com/getPointGoogle Maps Coordinate Picker
google.com/mapsSupported Conversions
Convert coordinates between 22+ geodetic systems with professional-grade accuracy
NAD83 (North American Datum 1983) is the official geodetic reference system for the United States, Canada, Mexico, and Central America. It uses the GRS80 ellipsoid and is aligned with ITRF for North American plate stability.
NAD83 was established in 1986, replacing the older NAD27 datum. It has undergone multiple refinements (NAD83(1986), NAD83(NSRS2007), NAD83(2011)) to improve accuracy using GPS observations and the National Spatial Reference System (NSRS).
WGS84 (World Geodetic System 1984) is the global standard geodetic reference system used by GPS. It defines an Earth-centered, Earth-fixed coordinate system and geodetic datum.
Developed by the U.S. Department of Defense in 1984, WGS84 has undergone several refinements (WGS84(G730), WGS84(G873), WGS84(G1150), WGS84(G1762)) to improve accuracy through GPS satellite observations.
UTM (Universal Transverse Mercator) is a map projection system that divides the Earth into 60 zones, each 6 degrees of longitude wide.
The UTM system was developed by the U.S. Army Corps of Engineers in the 1940s and later adopted by NATO.
MGRS (Military Grid Reference System) is a global grid reference system based on UTM projections. It divides the Earth into 60 UTM zones and uses grid zone designators and 100km square identifiers for precise location referencing.
MGRS was developed by NATO during the Cold War era as a standardized military grid system for coordinating joint operations across member nations. It has since been adopted by humanitarian organizations, emergency services, and outdoor recreation.
GCJ-02 (Mars Coordinate System) is a geodetic datum used in China for geospatial data. It applies an encrypted offset to WGS84 coordinates to comply with national regulations.
Developed by the Chinese National Bureau of Surveying and Mapping, GCJ-02 was introduced to implement the national security policy on geospatial information. Most Chinese map services use this system.
BD-09 (Baidu Coordinate System) is a geodetic system developed by Baidu, based on GCJ-02 with additional encryption for use in Baidu Maps and related services.
Baidu developed BD-09 by applying a secondary encryption layer on top of GCJ-02 to further obfuscate coordinates. It is proprietary to Baidu and used exclusively in their mapping ecosystem.
CGCS2000 (China Geodetic Coordinate System 2000) is China's official national geodetic coordinate system, replacing Beijing 1954 and Xian 1980 systems. It is aligned with ITRF97.
CGCS2000 was officially adopted by the State Council of China in 2008 as the national standard.
BJ54 (Beijing 1954 Coordinate System) was China's first national geodetic coordinate system.
BJ54 was established in 1954 based on the Soviet Pulkovo 1942 datum.
BJ2000 is China's modern geodetic reference system based on CGCS2000, established to replace BJ54.
BJ2000 was developed alongside CGCS2000 as part of China's geodetic infrastructure modernization.
OSGB36 (Ordnance Survey Great Britain 1936) is the official geodetic datum for England, Scotland, Wales, and Northern Ireland. It uses the Airy 1830 ellipsoid and is the basis for all UK Ordnance Survey mapping.
OSGB36 was established in 1936 by the Ordnance Survey as a unified national datum replacing numerous local county datums. It forms the foundation of the British National Grid (BNG) projection system used across the UK.
ETRS89 is the EU-recommended geodetic reference system for Europe, fixed to the stable part of the Eurasian Plate.
ETRS89 was established in 1990 by the EUREF subcommission.
ED50 was the primary geodetic reference system for Western Europe during the mid-20th century.
ED50 was developed after World War II to unify the various national datums across Europe.
HTRS96 is Croatia's national geodetic reference system, based on ITRF96 and compatible with ETRS89.
HTRS96 was established in 1996 as Croatia's modern geodetic datum.
EOV is Hungary's national unified projection coordinate system, used for GIS, mapping, and cadastral surveys.
EOV was introduced in 1975 to replace earlier Hungarian coordinate systems.
JGD2011 is Japan's national geodetic system, updated after the 2011 Great East Japan Earthquake to account for significant crustal deformation.
JGD2011 replaced JGD2000 following the massive crustal displacements caused by the 2011 Tohoku earthquake (Mw 9.0).
JGD2000 was Japan's national geodetic system before the 2011 earthquake, based on ITRF94 and the GRS80 ellipsoid.
JGD2000 replaced the Tokyo Datum in 2002, modernizing Japan's surveying infrastructure with GPS-compatible coordinates.
PRS92 (Philippine Reference System 1992) is the national geodetic coordinate system of the Philippines.
PRS92 was established in 1992 to replace the Luzon Datum 1911.
GDM2000 is Malaysia's national geodetic reference system, based on ITRF2000 and the GRS80 ellipsoid.
GDM2000 replaced the Malayan Datum 1948 to provide a modern, GPS-compatible reference system.
Indian 1975 is a geodetic datum primarily used in Thailand and Southeast Asian countries.
Indian 1975 was established as a regional datum for Southeast Asia.
Clarke 1880 is a historic geodetic ellipsoid defined by Alexander Ross Clarke in 1880.
The Clarke 1880 ellipsoid became the basis for many national datums in Africa, including Arc 1950.
DMS (Degrees, Minutes, Seconds) is a sexagesimal coordinate format where angles are expressed in degrees (°), minutes ('), and seconds ("). It is the traditional format for paper maps and GPS devices.
The DMS format dates back to ancient Babylonian astronomy and was adopted by early European navigators and cartographers. It remained the standard for nautical charts and topographic maps until the widespread adoption of decimal degrees.
DDM (Degrees and Decimal Minutes) is a coordinate format combining whole degrees with minutes expressed as a decimal fraction, widely used in GPS receivers and marine navigation.
DDM emerged as a practical compromise between the traditional DMS format and modern decimal degrees, offering better precision than DMS while remaining compatible with analog chart plotting.
Decimal Degrees (DD) is a coordinate format where latitude and longitude are expressed as decimal fractions of degrees, the most widely used format in digital mapping and GIS software.
Decimal degrees became practical with the advent of digital computing and GPS technology, enabling direct mathematical calculations without the need for sexagesimal conversion.
BNG (British National Grid) is the official projected coordinate system for the United Kingdom, based on the OSGB36 geodetic datum and the Transverse Mercator projection optimized for the British Isles.
The British National Grid was developed by the Ordnance Survey as a unified national grid system, replacing various local projections. It uses a Transverse Mercator projection with a central meridian at 2°W, designed to minimize distortion across Great Britain.
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22+ coordinate format support
dx, dy, dz (meters) - shifts along X, Y, Z axes of the Earth-centered reference frame
rx, ry, rz (radians) - rotations around each axis to align datum orientations
s (ppm) - scale factor adjusting for size differences between ellipsoids
A sexagesimal notation where coordinates are expressed in degrees (°), minutes ('), and seconds ("). The traditional format used in paper maps and GPS devices.
Example: 23°3'3.78"N, 113°22'17.36"E
A coordinate format where degrees are followed by minutes expressed as a decimal fraction. Widely used in GPS receivers, NMEA sentences, USGS topo maps, and aviation charts. DDM combines human-readable degrees with precise decimal minutes.
Example: 40°26.7717'N, 79°58.9336'W
Degrees expressed as a single decimal fraction. The most widely used format in digital mapping and GIS software.
Example: 23.05105, 113.37149
A metric grid system used by the Ordnance Survey for all official UK mapping. Coordinates are expressed as easting and northing in meters, projected from OSGB36 using a Transverse Mercator projection.
Example: 530000 180000 (London area)